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Variable load control strategy for room-temperature magnetocaloric cooling applications

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  • Qian, Suxin
  • Yuan, Lifen
  • Yu, Jianlin
  • Yan, Gang

Abstract

Room temperature magnetocaloric cooling is more environmental friendly but not yet more energy efficient than the state-of-the-art vapor compression technology. In this paper, we provide one more argument to support magnetic cooling technology, which is the superior energy saving potential under part load conditions. Therefore, magnetic cooling system may not compete with vapor compression under full load nominal condition, but its seasonal or annual overall efficiency could be better when part load characteristics are taken into account. To show the operation feasibility under part load condition, a feedback control strategy is proposed and incorporated into a magnetic cooling system model in Simulink first. The robust control quality is then revealed by numerical simulation studies for five different variable part load profiles. Furthermore, the transient accumulated energy performances are compared with those estimated based on the quasi-steady state condition to simplify the calculation on the overall energy efficiency benefit. Finally, a case study is carried out for unitary air-conditioning application, revealing that the overall energy efficiency is almost twice of the energy efficiency evaluated under full load condition.

Suggested Citation

  • Qian, Suxin & Yuan, Lifen & Yu, Jianlin & Yan, Gang, 2018. "Variable load control strategy for room-temperature magnetocaloric cooling applications," Energy, Elsevier, vol. 153(C), pages 763-775.
    • Handle: RePEc:eee:energy:v:153:y:2018:i:c:p:763-775
    DOI: 10.1016/j.energy.2018.04.104
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    Cited by:

    1. Limei Shen & Xiao Tong & Liang Li & Yiliang Lv & Zeyu Liu & Junlong Xie, 2022. "Performance Simulation of the Active Magnetic Regenerator under a Pulsed Magnetic Field," Energies, MDPI, vol. 15(18), pages 1-13, September.
    2. Ismail, A. & Perrin, M. & Giurgea, S. & Bailly, Y. & Roy, J.C. & Barriere, T., 2022. "Multiphysical and multidimensional modelling of Parallel-Plate active magnetic regenerator," Applied Energy, Elsevier, vol. 314(C).
    3. Angelo Maiorino & Antongiulio Mauro & Manuel Gesù Del Duca & Adrián Mota-Babiloni & Ciro Aprea, 2019. "Looking for Energy Losses of a Rotary Permanent Magnet Magnetic Refrigerator to Optimize Its Performances," Energies, MDPI, vol. 12(22), pages 1-21, November.
    4. Chdil, O. & Bikerouin, M. & Balli, M. & Mounkachi, O., 2023. "New horizons in magnetic refrigeration using artificial intelligence," Applied Energy, Elsevier, vol. 335(C).
    5. Aprea, C. & Greco, A. & Maiorino, A. & Masselli, C., 2020. "The use of barocaloric effect for energy saving in a domestic refrigerator with ethylene-glycol based nanofluids: A numerical analysis and a comparison with a vapor compression cooler," Energy, Elsevier, vol. 190(C).
    6. Johra, Hicham & Filonenko, Konstantin & Heiselberg, Per & Veje, Christian & Dall’Olio, Stefano & Engelbrecht, Kurt & Bahl, Christian, 2019. "Integration of a magnetocaloric heat pump in an energy flexible residential building," Renewable Energy, Elsevier, vol. 136(C), pages 115-126.

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